Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
maraigh
←
Irish
marbh
(affix)
←
Irish
-igh
(affix)
←
Old Irish
marbaid
(derived)
←
Old Irish
marbh
(mention)